– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sat 14 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sat 14 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sat 14 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of snow. Milder later with heavy rain (total 35mm) on Mon morning. Freeze-thaw conditions (max 8°C on Mon afternoon, min -3°C on Sat night). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 97mm), heaviest during Thu night. Mild temperatures (max 9°C on Thu morning, min 7°C on Wed morning). Wind will be generally light. | ||||||||||||||||
Sat 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | |  | | |  | | |  | | | | |
some clouds | some clouds | cloudy | light rain | light snow | mod. rain | mod. rain | light rain | light rain | mod. rain | heavy rain | mod. rain | mod. rain | mod. rain | mod. rain | mod. rain | heavy rain | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | 0.2 | 13 | 8 | 5 | 4 | 4 | 5 | 20 | 9 | 8 | 9 | 7 | 8 | 20 | |
max °C | 0 | -2 | 2 | 4 | 4 | 5 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 8 | 9 | 9 | 9 |
min °C | 0 | -3 | -1 | 2 | 2 | 4 | 6 | 6 | 6 | 8 | 8 | 7 | 7 | 7 | 9 | 9 | 8 |
-3 | -3 | -1 | 0 | 0 | 1 | 3 | 3 | 4 | 6 | 6 | 4 | 4 | 5 | 7 | 7 | 6 | |
550 | 0 | 850 | 800 | 1500 | 2500 | 2200 | 2350 | 2350 | 2400 | 2450 | 2350 | 2300 | 2500 | 2600 | 2700 | 2650 | |
Cloud base (m) | 650 | 800 | 2250 | 1950 | 600 | 600 | 600 | 1550 | 600 | 550 | 550 | 600 | 600 | 600 | 600 | 600 | 550 |
 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — |
 | 7:10 | — | — | 7:12 | — | — | 7:14 | — | — | 7:15 | — | — | 7:16 | — | — | 7:17 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of snow. Milder later with heavy rain (total 35mm) on Mon morning. Freeze-thaw conditions (max 8°C on Mon afternoon, min -3°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 97mm), heaviest during Thu night. Mild temperatures (max 9°C on Thu morning, min 7°C on Wed morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.